i've got 3" long wheel studs in my rear axles and i was thinking of putting some wheel spacers in there to bump the rear tires out a little more to match up with the front. plus i wouldnt have so much stud sticking out past the nut. i know they make ones that bolt on, but what about one that slides onto the studs and sandwiches inbetween. are these a good idea? it seems like they would be safer then the bolt on. i've seen them in summit before, but only 7/16 thick and only a 5 lug pattern. anyone know where i can get a 6 lug 1" thick version?